TFM 12 FIRE ALARM TECHNICAL FINAL
TEST 2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
• Does a Fire Hood System in a Kitchen need to be Monitored by the Fire
Alarm System?.
Answer: Yes, it is required for safety compliance.
• What is PLFA an abbreviation for?.
Answer: Power Limited Fire Alarm system.
• Does a fire hood system and a kitchen need to be monitored by the fire
alarm system?.
Answer: Yes
• What does NPLFA stand for?.
Answer: Non-Power Limited Fire Alarm system.
• Difference between PLFA and NPLFA?.
Answer: NPLFA can operate at up to 600V, while PLFA has voltage and
power limited by a listed power source.
• What does P.L.F.A stand for?.
Answer: Power Limited Fire Alarm
• Material for NPFLA Circuit Conductors?.
Answer: Only solid and/or stranded copper is permitted.
• What does N.P.L.F.A stand for?.
Answer: Non-Power Limited Fire Alarm
• What does AWG stand for?.
Answer: American Wire Gauge used for measuring wire sizes.
• Permitted size conductors for NPLFA system?.
Answer: 18 AWG or larger, meeting specific ampacities and installation
, requirements.
• Size of conductors for PLFA system?.
Answer: 26 AWG for multi-conductor cable, 18 AWG for single conductor.
• Protection for transformers in PLFA and NPLFA systems?.
Answer: Over-current device not exceeding 20A for PLFA, 7A for 18 AWG
in NPLFA, refer to NFPA 70 for larger sizes.
• What is the difference between P.F.L.A and N.P.F.L.A? a P.L.F.A has the
voltage and power limited by a listed power source..
Answer: an N.P.L.F.A can operate at up to 600v, and the power output isn't
limited
• What material must N.P.F.L.A circuit conductors be made from?.
Answer: ONLY solid stranded copper is permitted.
• How to fasten cables within 7 feet of the floor?.
Answer: Cables should be fastened at intervals of not more than 18 inches in
an approved manner.
• What does A.W.G stand for?.
Answer: American Wire Gauge
• What size conductors are permitted?.
Answer: Size 18 A.W.G and 16 A.W.G are permitted, provided they do not
exceed certain capacities.
• What is used to protect transformers or other devices supplied from
power-supply conductors?.
Answer: An over-current device not rated over 20 amperes.
• Minimum AWG for single conductors?.
Answer: 18 AWG is the smallest permitted size.
• When are 26 AWG conductors permitted?.
Answer: When used in a multi-conductor cable.
• How should PFLA conductors be installed?.
, Answer: PFLA conductors shall not be strapped, taped, or attached to the
exterior of any conduit or raceway.
• Define Plenum cable..
Answer: Cable that can be installed in ducts, plenums, or other spaces used
for environmental air, with fire-resistant and low smoke-producing
characteristics.
• What is a Riser cable used for?.
Answer: Vertical wire runs in shafts between floors, preventing fire spread
between floors.
• When located within 7 feet of the floor, how shall cables be fastened?.
Answer: Cables shall be fastened in an approved manner at intervals of not
more than 18 inches.
• Single conductors shall not be smaller than ___ A.W.G?.
Answer: 18
• What is the purpose of general purpose cable?.
Answer: For general fire alarm use, resistant to fire spread.
• Conductors of 28 A.W.G shall only be permitted in which circumstance?.
Answer: Spliced with a connector listed as suitable for 26 to 24 A.W.G
• Type requirement for Plenum cable and allowed substitutions..
Answer: FPLP; CMP can be substituted.
• Type requirement for Riser cable and allowed substitutions..
Answer: FPLR; CMR, FPLP, and CMP can be substituted.
• How shall P.F.L.A conductors NOT be installed?.
Answer: P.F.L.A conductors shall not be strapped, taped, or attached to the
exterior of any conduit or raceway.
• What is Plenum cable?.
Answer: Cable that can be installed in ducts, plenums, or other spaces used
for environmental air.
TEST 2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
• Does a Fire Hood System in a Kitchen need to be Monitored by the Fire
Alarm System?.
Answer: Yes, it is required for safety compliance.
• What is PLFA an abbreviation for?.
Answer: Power Limited Fire Alarm system.
• Does a fire hood system and a kitchen need to be monitored by the fire
alarm system?.
Answer: Yes
• What does NPLFA stand for?.
Answer: Non-Power Limited Fire Alarm system.
• Difference between PLFA and NPLFA?.
Answer: NPLFA can operate at up to 600V, while PLFA has voltage and
power limited by a listed power source.
• What does P.L.F.A stand for?.
Answer: Power Limited Fire Alarm
• Material for NPFLA Circuit Conductors?.
Answer: Only solid and/or stranded copper is permitted.
• What does N.P.L.F.A stand for?.
Answer: Non-Power Limited Fire Alarm
• What does AWG stand for?.
Answer: American Wire Gauge used for measuring wire sizes.
• Permitted size conductors for NPLFA system?.
Answer: 18 AWG or larger, meeting specific ampacities and installation
, requirements.
• Size of conductors for PLFA system?.
Answer: 26 AWG for multi-conductor cable, 18 AWG for single conductor.
• Protection for transformers in PLFA and NPLFA systems?.
Answer: Over-current device not exceeding 20A for PLFA, 7A for 18 AWG
in NPLFA, refer to NFPA 70 for larger sizes.
• What is the difference between P.F.L.A and N.P.F.L.A? a P.L.F.A has the
voltage and power limited by a listed power source..
Answer: an N.P.L.F.A can operate at up to 600v, and the power output isn't
limited
• What material must N.P.F.L.A circuit conductors be made from?.
Answer: ONLY solid stranded copper is permitted.
• How to fasten cables within 7 feet of the floor?.
Answer: Cables should be fastened at intervals of not more than 18 inches in
an approved manner.
• What does A.W.G stand for?.
Answer: American Wire Gauge
• What size conductors are permitted?.
Answer: Size 18 A.W.G and 16 A.W.G are permitted, provided they do not
exceed certain capacities.
• What is used to protect transformers or other devices supplied from
power-supply conductors?.
Answer: An over-current device not rated over 20 amperes.
• Minimum AWG for single conductors?.
Answer: 18 AWG is the smallest permitted size.
• When are 26 AWG conductors permitted?.
Answer: When used in a multi-conductor cable.
• How should PFLA conductors be installed?.
, Answer: PFLA conductors shall not be strapped, taped, or attached to the
exterior of any conduit or raceway.
• Define Plenum cable..
Answer: Cable that can be installed in ducts, plenums, or other spaces used
for environmental air, with fire-resistant and low smoke-producing
characteristics.
• What is a Riser cable used for?.
Answer: Vertical wire runs in shafts between floors, preventing fire spread
between floors.
• When located within 7 feet of the floor, how shall cables be fastened?.
Answer: Cables shall be fastened in an approved manner at intervals of not
more than 18 inches.
• Single conductors shall not be smaller than ___ A.W.G?.
Answer: 18
• What is the purpose of general purpose cable?.
Answer: For general fire alarm use, resistant to fire spread.
• Conductors of 28 A.W.G shall only be permitted in which circumstance?.
Answer: Spliced with a connector listed as suitable for 26 to 24 A.W.G
• Type requirement for Plenum cable and allowed substitutions..
Answer: FPLP; CMP can be substituted.
• Type requirement for Riser cable and allowed substitutions..
Answer: FPLR; CMR, FPLP, and CMP can be substituted.
• How shall P.F.L.A conductors NOT be installed?.
Answer: P.F.L.A conductors shall not be strapped, taped, or attached to the
exterior of any conduit or raceway.
• What is Plenum cable?.
Answer: Cable that can be installed in ducts, plenums, or other spaces used
for environmental air.
